Publication

Snapshots of cooperative atomic motions in the optical suppression of charge density waves

Publications associées (46)

Graph Chatbot

Chattez avec Graph Search

Posez n’importe quelle question sur les cours, conférences, exercices, recherches, actualités, etc. de l’EPFL ou essayez les exemples de questions ci-dessous.

AVERTISSEMENT : Le chatbot Graph n'est pas programmé pour fournir des réponses explicites ou catégoriques à vos questions. Il transforme plutôt vos questions en demandes API qui sont distribuées aux différents services informatiques officiellement administrés par l'EPFL. Son but est uniquement de collecter et de recommander des références pertinentes à des contenus que vous pouvez explorer pour vous aider à répondre à vos questions.

Connectez-vous pour utiliser Chat avec Graph Search

Imaging of electron potential landscapes on Au(111)

Klaus Kern, Harald Brune

The Hohenberg-Kohn theorem states that the ground state electron density completely determines the external potential acting on an electron system. Inspired by this fundamental theorem, we developed a novel approach to map directly the electron potential i ...

2002

Charge density wave and quantum fluctuations in a molecular crystal

Nicolas Macris

We consider an electron-phonon system in two and three dimensions on square, hexagonal, and cubic lattices. The model is a modification of the standard Holstein model where the optical branch is appropriately curved in order to have a reflection positive H ...

1999

Pseudogap in the one-electron spectral functions of the attractive Hubbard model

Massimiliano Capezzali

We calculate the one-electron Green's function of the two-dimensional (2D) attractive Hubbard model by coupling the electrons to pair fluctuations. The latter are approximated by homogeneous amplitude fluctuations and phase correlations corresponding to th ...

Elsevier1999

Structural and electronic properties of small Cu-n clusters using generalized-gradient approximations within density functional theory

Alfredo Pasquarello

Neutral and anionic Cu-n clusters (Cu-2, Cu-3, Cu-6 and Cu-7(-)) are studied within density functional theory via the local density approximation (LDA) and the generalized-gradient approximation (GGA) of Perdew and Wang for exchange and correlation. Three ...

1998

Pseudopotential calculations within density-functional theory for a few selected solids (Si, GaAs, and Al) are used to assess the validity of two generalized-gradient approximations (GGA's), the one proposed by Becke and Perdew (BP) and the more recent one ...

1996

The control and data acquisition system for the ISTTOK heavy ion beam diagnostic

A heavy ion beam diagnostic for the tokamak ISTTOK has been developed with the aim of measuring the temporal evolution of the electron density, plasma potential, electron temperature and poloidal magnetic field radial profiles. The control and data acquisi ...

1995